JP6320225B2 - Truck bed structure - Google Patents

Description

  The present invention relates to a truck bed structure.

  The truck bed is formed to extend rearward from the rear wall of the passenger compartment, and is required to have high rigidity capable of withstanding the large weight of the load. In order to meet this requirement, left and right side members that extend in the longitudinal direction of the vehicle are conventionally provided on the left and right sides, and a floor panel is fixed on the floor frame on the left and right side members. There has been proposed a truck bed structure in which a truck bed is mounted and mounted (see, for example, Patent Document 1).

JP-A-11-268668

  In the conventional structure described in Patent Document 1, since the loading platform formed by fixing the floor panel on the floor frame is bridged on the left and right side members extending in the longitudinal direction of the vehicle, the rigidity of the loading platform itself can be improved. However, from the viewpoint of frame rigidity necessary to support a large load, the frame may be twisted during driving depending on the weight of the load, and further improvements are required from the viewpoint of improving handling stability. .

On the other hand, if an attempt is made to improve the frame rigidity by adding a large reinforcing member, there is a problem that the vehicle weight and cost increase and productivity deteriorates.

The present invention has been made in view of the above-described conventional situation, and has a simple structure by devising the arrangement position of a relatively small reinforcing member. Therefore, the frame rigidity is minimized while minimizing an increase in vehicle weight and cost. It is an object to provide a structure for reinforcing a vehicle bed that can improve the vehicle.

The present invention is a truck bed structure in which a bed is mounted on left and right side members extending in the vehicle longitudinal direction.
The left and right side members have a cylindrical shape with a rectangular cross section,
The cargo bed is formed by fixing a floor panel on a floor frame formed by connecting left and right floor side members to each other by a plurality of floor cross members, and the floor cross members are formed on the upper surfaces of the left and right side members. It is fixed across
A cross member is bridged and fixed to the lower surface of the rear end of the left and right side members,
When viewed from the rear of the vehicle, the cross member, the left and right side members, and the floor cross member form a rectangular shape.

  According to the truck bed structure according to the present invention, the left and right side members of the left and right side members are connected to each other by the floor cross member, and the lower surfaces are connected to each other by the cross member to form a rectangular shape in the vehicle rear view. While making the cross member relatively small, the frame rigidity can be improved, the feeling of twisting of the frame is reduced, and the steering stability is improved.

  In addition, since the cross member is relatively small, an increase in vehicle weight and cost can be minimized.

Further, since the cross member is installed on the lower surface of the side member, the cross member is positioned at a relatively low position, and the cross member can prevent the following vehicle from entering the lower part of the loading platform.

Furthermore, a space corresponding to the height of the side member is formed between the cross member and the loading platform. Inserting your foot into this space and placing your foot on the cross member allows you to get on and off the loading platform. Becomes easy.

It is the perspective view seen from diagonally the back of the track | truck where the loading platform structure which concerns on Example 1 of this invention was employ | adopted. It is a top view of the said loading platform structure. It is a side view of the said loading platform structure. It is a rear view of the said loading platform structure. FIG. 5 is a cross-sectional rear view of the cargo bed structure (a cross-sectional view taken along line V-V in FIG. 2). FIG. 5 is a cross-sectional side view of the cargo bed structure (a cross-sectional view taken along line VI-VI in FIG. 2). FIG. 7 is a cross-sectional rear view of the cargo bed structure (a cross-sectional view taken along line VII-VII in FIG. 3.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 to 7 are views for explaining a truck bed structure according to Embodiment 1 of the present invention.

  In the figure, reference numeral 1 denotes a truck. The truck 1 extends rearward from a vehicle body frame 2, a vehicle compartment 3 mounted on the front portion of the vehicle body frame 2, and a rear wall 3a of the vehicle compartment 3. And a loading platform 4 mounted on the rear portion of the frame 2. In addition, 17a is a front wheel and 17b is a rear wheel.

  The vehicle body frame 2 is disposed on both sides of the vehicle and extends in the vehicle front-rear direction, and a plurality of couplings that extend in the vehicle width direction and couple the left and right side members 5, 5. This is a so-called ladder type frame having members 6.

  The side member 5 has a cross-sectional hat-shaped member main body 5a that opens upward, and a cross-sectional hat shape that opens downward, and closes the opening on the member main body 5a. It is comprised with the raising member 5b arrange | positioned and combined, and has comprised the rectangular cylinder shape.

  A spare tire 14 is suspended from a rear lower surface of the vehicle body frame 2 by a suspension 15 made of a round bar so as to be positioned at the center in the vehicle width direction. The hanger 15 is formed by connecting a main bar 15a and a sub bar 15b in a substantially cross shape, and one end of the main bar 15a is engaged with a bracket 15c fixed to the connecting member 6 and the other end. The spare tire 14 is fixedly supported by tightening upward.

  The loading platform 4 is composed of a loading platform body 7, side gates 8, 8 standing up and down at the left and right sides of the loading platform body 7, and a rear gate 9 standing up and down at the rear end. ing.

  The cargo bed main body 7 includes a cargo bed frame 10 and a floor panel 11 laid on the cargo bed frame 10. The cargo bed frame 10 is a rectangular tube-shaped front and rear cross member 10b, 10b extending in the vehicle width direction between the front and rear ends of the left and right floor-side members 10a, 10a having a rectangular tube shape extending in the vehicle longitudinal direction. The intermediate portions of the floor side members 10a and 10a are connected by a plurality of floor cross members 10c. The floor cross member 10c has a hat-shaped cross section that opens upward, and the floor panel 11 is fixed to the upper surface of the floor cross member 10c. A plurality of reinforcing beads 11a are formed on the floor panel 11 so as to extend in the vehicle front-rear direction.

  In the loading platform 4, the floor cross member 10c is arranged across the upper surfaces of the left and right side members 5 and 5, and the floor cross member 10c is fastened and fixed to the upper surface of the raising member 5b with bolts 12a. Thus, the vehicle body frame 2 is fixed on the rear part.

  A step plate 13 is fixed to the rear ends of the left and right floor side members 10a, 10a to assist when getting on and off the loading platform 4. The step plate 13 has an opening 13a. The opening 13a is for hanging a foot F when getting on and off the loading platform 4.

  Then, a cross member 16 is bridged between the lower surfaces of the rear end portions of the left and right side members 5 and 5 and coincides with the opening 13a of the step plate 13 when viewed from the side of the vehicle (see FIG. 3). Has been placed.

  The cross member 16 has an L-shaped cross section having a lateral side portion 16a and a longitudinal side portion 16b, and the lateral side portion 16a is fastened and fixed to the lower surface of the member main body 5a by a bolt 12b. Thus, when viewed from the rear of the vehicle, the cross member 16, the left and right side members 5, 5 and the floor cross member 10c form a horizontally long rectangle.

  On both ends of the lateral side portion 16a of the cross member 16, footrest pieces 16c are formed so as to be bent downward in an arc shape. The position of the footrest piece 16c is set so that when the foot F is inserted into the opening 13a of the step plate 13, the foot sole F 'is placed.

  Further, a contact piece 16d is formed to be bent downward at the center in the vehicle width direction of the horizontal side portion 16a. The contact piece 16d is arranged so as to be close to the rear edge 14 'of the spare tire 14.

  As described above, according to the present embodiment, the cross member 16 is bridged between the lower surfaces of the left and right side members 5 and 5 so that the cross member 16, left and right can be seen when viewed from the rear of the vehicle. Since the side members 5 and 5 and the floor cross member 10c form a horizontally long rectangle, the rigidity of the body frame 2 can be improved.

  In this case, since the cross member 16 is a small member having an L-shaped cross section, an increase in weight and cost can be minimized.

Further, since the cross member 16 is installed on the lower surface of the side member 5, the cross member 16 is positioned at a relatively low place, and the cross member 16 can prevent the following vehicle from entering below the loading platform.

Furthermore, the contact piece 16d is bent downward at the vehicle width direction central portion of the lateral side portion 16a, and the contact piece 16d is disposed so as to be close to the rear edge 14 'of the spare tire 14. A part of the load can be absorbed by the spare tire 14 when the subsequent vehicle enters. Of course, the contact piece 16d may be bent upward to absorb the rush load by the spare tire 14.

Further, a space A corresponding to the height of the side member 5 is formed between the cross member 16 and the loading platform 4, and by inserting a foot into this space and hanging on the cross member 16, Easy to get on and off.

  Further, since the position of the cross member 16 is aligned with the opening 13a of the step plate 13 and the footrest pieces 16c are formed at both ends of the lateral side portion 16a, the foot is inserted into the opening 13a of the step plate 13. When the foot rests on the footrest piece 16c, it is possible to more easily get on and off the loading platform 4.

1 truck 5 side member 4 loading platform 10 loading platform frame 10a floor side member 10c floor cross member 11 floor panel 16 cross member

Claims (1)

In the truck bed structure, which is loaded with left and right side members extending in the longitudinal direction of the vehicle,
The left and right side members have a cylindrical shape with a rectangular cross section,
The cargo bed is formed by fixing a floor panel on a cargo bed frame in which left and right floor side members are connected to each other by a plurality of floor cross members, and the floor cross member is placed on the upper surfaces of the left and right side members. It is fixed across
A cross member is bridged and fixed to the lower surface of the rear end of the left and right side members,
When viewed from the rear of the vehicle, a truck bed structure in which a rectangle is formed by the cross member, left and right side members, and a floor cross member.

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